Question about 1999 Chevrolet Silverado 2500

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On my 1999 Silverado 2500 there must be a low side port for me to add 134a coolant. Where is it?

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Http://s11.photobucket.com/albums/a161/black95jimmy/?action=view&current=ACRechargePorts001.jpg

It's the small one.

Posted on Jul 29, 2010

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1 Answer

Where's the coolant level sensor located on a 6.0 '02 Chevy 2500 HD Silverado?


this might be important for you to know
Quote:

08-08-49-002: False Triggering of Low Coolant Level Warning Message (Reprogram HVAC Control Module) - (Feb 13, 2008)

Subject:
False Triggering Of Low Coolant Level Warning Message (Reprogram HVAC Control Module)

Models:
2007-2008 Chevrolet Silverado 2500 and 3500 Heavy Duty Series Only
2007-2008 GMC Sierra 2500 and 3500 Heavy Duty Series Only
with 6.6L Diesel Engine (VIN 6 -- RPO LMM)

--------------------------------------------------------------------------------
Condition
Some customers may comment that a "COOLANT LEVEL LOW ADD COOLANT" message is displayed in the Driver Information Center (DIC) even though the coolant level is normal.

Cause
This condition may be caused by a false reading during off-road driving or in high slush conditions.

Correction
Do This - Reprogram the HVAC control module.
Don't Do This - Do not replace the coolant level sensor, HVAC control module or radiator surge tank.


A revised calibration has been developed to address this condition. Technicians are to reprogram the Heating Ventilation and Air Conditioning (HVAC) control module with the latest software available on TIS2WEB. Refer to the Service Programming System procedures in SI. As always make sure your Tech 2 is updated with the latest software version.


Warranty Information
For vehicles repaired under warranty, use:
Labor: Operation D4707
Description: HVAC Control Head Module or Assembly Reprogramming with SPS
Labor Time: Use Published Labor Operation Time

Dec 02, 2013 | 2002 Chevrolet Silverado 2500HD

1 Answer

Does the 1994 chevy silverado 2500 take the 134a or r12. The a/c blows out hot air need to charge it


if you take off the cap is it threaded on the out side if it is it is r-12 if there are no threads one the out side it is r-134a witch takes a clip on adapter

Aug 29, 2010 | 1994 Chevrolet Silverado 2500

1 Answer

How and where do you add 134a to air conditioning on 1999 suburban small port or the large port?


Small port is the suction side of the system. Make sure you have a gauge to monitor system low side pressure. Ambient temperature makes all the difference as to what pressure it should be when full. Probably between 25 and 40 psi.

Jul 06, 2010 | 1999 Chevrolet Suburban

1 Answer

No heat


If it had dexcool orange coolant in it, the heater core is probably plugged, pull off the hoses and blow air through it, the dexcool breaks down and clogs everything. I had this problem a month ago and the core was plugged badly. Hope this helps

Dec 30, 2009 | 1999 Chevrolet Silverado 2500

2 Answers

Drain Engine Coolant in 2005 Chevy Silverado 2500 HD


there is a petcock at the bottom of the rad drain ti from there and use a antifreeze tester to check protection temp

Nov 18, 2009 | 2005 Chevrolet Silverado 2500HD 2WD

2 Answers

99 Chevy Siverado AC works then quits


low 134a coolant, you may have a pin hole leak, or just need topped up on 134a. wallmart or most auto parts stores sell 134a kits. also check your rad coolant.

Aug 13, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Where is the port to add 134a to a 1999 Town & county and what color is the port cap?


It's called the low side and should have a black top on it. Should be very visable..

Jun 27, 2009 | 2004 Chrysler Town & Country

1 Answer

Air Conditioning


#1 you will need r134a freon. #2 the low side service port is located right at the firewall where tha line goes to the evaporator. #3 if wou bought a can of 134a freon with a hose that will hook to it, it will work. all service fittings for 134a freon are the same even though the high side and the low side will always differ

Aug 18, 2008 | 1998 Oldsmobile Cutlass

1 Answer

Location of low pressure port A/c to added 134a


Down low between the radiator and the engine. Look for the cap. Very hard to reach without burning your hand if the engine is hot. I had to rig a much longer hose to add 134a so the can would be upright while putting it in.

Jul 28, 2008 | 2002 Chevrolet Venture Passanger

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